BIG BEAR, Calif. -- Gennady Golovkin lashed out at Canelo Alvarez as "shameful" and "stupid" for his positive drug test for a banned performance-enhancing substance, urging authorities to take the matter seriously.
In a Wednesday conversation with the Los Angeles Times at his Big Bear training facility, three-belt middleweight champion Golovkin (37-0-1, 33 knockouts) said the Nevada Athletic Commission and the sanctioning bodies must hold the sport's most popular fighter accountable.
Mexico's former two-division champion Alvarez (49-1-2, 34 KOs) fought Golovkin to a draw in September and they are in training for their May 5 rematch at T-Mobile Arena in Las Vegas.
On Monday, however, Golden Boy Promotions announced Alvarez had tested positive for the banned substance clenbuterol, which can assist athletes in building stamina and endurance but has also previously been found in Mexican beef and caused several positive test results.
Alvarez, like his countrymen before him -- recently elected International Boxing Hall of Fame boxer Erik Morales, and recent super-bantamweight world champion Francisco Vargas -- is blaming the accidental ingestion of contaminated Mexican beef for two positive results in February.
Golovkin promoter Tom Loeffler said Alvarez and his team should provide full disclosure of when and where the contaminated beef was purchased and consumed.
"We are elite athletes, and I want to keep boxing on this elite level," Golovkin said. "There are laws and a commission and (anti-doping scrutiny), and we have to fulfill them. They have to take action in that case, either disqualify him or (deliver) penalties. But if it's neglected, why do we need a commission? And why talk about tests?
"When you get to this level, people should be watching the skills you muster from yourself, not wonder which laboratory you have."
Golovkin of course wants to participate in the lucrative bout with Alvarez, but says he has options to pursue if the fight is scrapped.
"My first impression is athletes at this level cannot fail or show any positive because it's bad for sport, bad for everything ... failing a test at this level either means he doesn't want to fight, has problems or has problems with his team," Golovkin said. "This is showing your true face.